<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .div_1 {
           /* 修饰属性 none-取消修饰、through-删除线、underline-下划线、overline-上划线 */
            text-decoration: none;
        }
        .div_2 {
            text-decoration: line-through;
        }
        .div_3 {
            text-decoration: overline;
        }
        .div_4 {
            text-decoration: underline;
        }
    </style>
</head>
<body>
     <div class="div_1">修饰文本内容1</div>
     <div class="div_2">修饰文本内容2</div>
     <hr />
     <div class="div_3">修饰文本内容3</div>
     <div class="div_4">修饰文本内容4</div>
</body>
</html>